Sofa



FIG. 1 is an elevated perspective view of a sofa showing my new design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side plan view thereof, the opposite side being a mirror image of the side shown;

FIG. 5 is a front plan view of an alternative embodiment of the sofa of my new design; and,

FIG. 6 is a top plan view thereof.

The rear of the sofa is plain and unornamented. 

The ornamental design for a sofa, as shown and described. 